Asphalts for pavement (ASTM D946) contain petroleum asphalt cement, derived by the distillation of asphaltic petroleum. Various grades are designated as 4050, 6070, 85100, 120150, and 200300, depending upon the depth of penetration of a standard needle in a standard test (ASTM D5).
Emulsions range from low to high viscosity and quick- to slow-setting (ASTM D977).
